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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4543) CLOB values incorrectly stored on disk using the old header format
Date Tue, 09 Feb 2010 10:55:28 GMT
CLOB values incorrectly stored on disk using the old header format
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                 Key: DERBY-4543
                 URL: https://issues.apache.org/jira/browse/DERBY-4543
             Project: Derby
          Issue Type: Bug
          Components: JDBC, Store
    Affects Versions: 10.6.0.0
            Reporter: Kristian Waagan
            Assignee: Kristian Waagan
             Fix For: 10.6.0.0


The logic determining whether CLOB values should be stored using the old (pre 10.5) or the
new header format has two bugs, which sometimes causes the old format to be used even though
the new one should be used.
The naming of the relevant methods are also problematic, as we're not really interested in
whether we are in soft-upgrade mode or not. If you soft-upgrade from 10.5 to 10.6, the new
header format should still be used.

The consequences of these bugs are potential loss of performance for certain operations on
CLOB values and in some cases it might cause a crash if the source stream cannot be rewinded/reset.

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